Unanswered: How to make HTML render properly into ExtJS tabs?

Unanswered: How to make HTML render properly into ExtJS tabs?

I am developing a simple JavaScript-based plugin architecture which allows for any JavaScript control from any framework (jQueryUI, ExtJS, etc). to be plugged into and reused on any web page. My plugins below happen to use ExtJS.

The first plugin renders fine in the first tab. However, since the second tab hasn't yet rendered when the page loads, the second plugin (also a grid) is first rendering to the document body, and then it renders properly (the HTMLElement/div is moved) inside the tab when the tab is selected. I'd like the plugin content to be hidden prior to rendering inside the tab. Also, when it it does render [when the tab is selected], horizontal scrollbars don't show unless I resize a column.